Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop that determines an axial light beam, and one cemented lens, and an image pickup section which is disposed on an image side of the image forming optical system, and which has a surface which is not flat and is curved to be concave toward the image forming optical system, wherein the cemented lens includes in order from an object side, a first lens having a negative refractive power, a second lens, and a third lens having a positive refractive power.

Abstract: An image pickup apparatus includes an image forming optical system having lens components and an image pickup unit, and the lens component is a lens having an object-side surface and an image-side surface that are in contact with air in an effective optical path, and the image forming optical system includes in order from an object side to an image side, an object-side lens component and an image-side lens component, and the image pickup unit has an image pickup surface curved to be concave toward the object side, and a surface nearest to the object of the object-side lens component has a concave shape portion which is concave shape toward the object side in a meridional direction, in at least an off-axis effective surface, and a surface nearest to the image of the image-side lens component is a curved surface.

Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop and a plurality of lens components, and an image pickup section which is disposed on an image side of the image forming optical system, and has a light-receiving surface which is not flat and is curved to be concave toward the image forming optical system. The image forming optical system includes a first lens component having a negative refractive power, a second lens component having a positive refractive power, and a third lens component having a positive refractive power. A shape of the first lens component is a meniscus shape, and a shape of the third lens component is a biconvex shape, and the following conditional expressions (1) and (2) are satisfied: 0.7<|PS×Rimg|<1.5??(1), and 0.7<|?out 90/?img 90|<1.5??(2).

Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop and a plurality of lens components, and an image pickup section which has a light-receiving surface which is not flat but is curved to be concave toward the image forming optical system. The image forming optical system includes a first lens component having a negative refractive power, a second lens component having a positive refractive power, and a third lens component having a positive refractive power. In the first lens component, a lens surface on the object side is convex toward the object side, and in a lens surface on the object side of the second lens component, a part of an area is concave toward the object side. Moreover, the following conditional expression (1) is satisfied: 0.5<(R1L+R1R)/(R1L?R1R)<2.5??(1).

Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop and a plurality of lens components, and an image pickup section which is disposed on an image side of the image forming optical system, and has a light-receiving surface which is not flat and is curved to be concave toward the image forming optical system. The image forming optical system includes a first lens component having a negative refractive power, a second lens component having a positive refractive power, and a third lens component having a positive refractive power. A shape of the first lens component is a meniscus shape, and a shape of the third lens component is a biconvex shape, and the following conditional expressions (1) and (2) are satisfied: 0.7<|PS×Rimg|<1.5??(1), and 0.7<|?out 90/?img 90|<1.5??(2).

Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop that determines an axial light beam, and one cemented lens, and an image pickup section which is disposed on an image side of the image forming optical system, and which has a surface which is not flat and is curved to be concave toward the image forming optical system, wherein the cemented lens includes in order from an object side, a first lens having a negative refractive power, a second lens, and a third lens having a positive refractive power.

Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop and a plurality of lens components, and an image pickup section which has a light-receiving surface which is not flat but is curved to be concave toward the image forming optical system. The image forming optical system includes a first lens component having a negative refractive power, a second lens component having a positive refractive power, and a third lens component having a positive refractive power. In the first lens component, a lens surface on the object side is convex toward the object side, and in a lens surface on the object side of the second lens component, a part of an area is concave toward the object side. Moreover, the following conditional expression (1) is satisfied: 0.5<(R1L+R1R)/(R1L?R1R)<2.5 ??(1).

Abstract: An image pickup apparatus includes an image forming optical system having lens components and an image pickup unit, and the lens component is a lens having an object-side surface and an image-side surface that are in contact with air in an effective optical path, and the image forming optical system includes in order from an object side to an image side, an object-side lens component and an image-side lens component, and the image pickup unit has an image pickup surface curved to be concave toward the object side, and a surface nearest to the object of the object-side lens component has a concave shape portion which is concave shape toward the object side in a meridional direction, in at least an off-axis effective surface, and a surface nearest to the image of the image-side lens component is a curved surface.

Abstract: An image processing device includes: a determining unit configured to determine, in accordance with two images corresponding to temporally adjacent image data input from an external device, whether or not a field area at a time of imaging has been changed; and a suppressing unit configured to generate and output suppressed image data with an amount of visually recognizable information included in the images being suppressed by performing image processing of reducing at least one of a contrast and a chroma of the images at a time the determining unit determines that the field area at the time of imaging has been changed.

Abstract: An image processing device includes: a determining unit configured to determine, in accordance with two images corresponding to temporally adjacent image data input from an external device, whether or not a field area at a time of imaging has been changed; and a suppressing unit configured to generate and output suppressed image data with an amount of visually recognizable information included in the images being suppressed by performing image processing of reducing at least one of a contrast and a chroma of the images at a time the determining unit determines that the field area at the time of imaging has been changed.

Abstract: The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving lens group B (G2) that has positive refracting power and moves only toward an object side of the zoom lens upon zooming from a wide-angle end to a telephoto end of the zoom lens, a lens group A (G1) that is located on the object side with respect to the moving lens group B, has negative refracting power and remains fixed during the zooming, and a third lens group C (G3) that is located on an image side of the zoom lens with respect to the moving lens group B and moves in a locus different from that of the moving lens group B during the zooming. The lens group A that remains fixed during zooming comprises, in order from an object side thereof, a negative lens element, a reflective optical element and a positive lens element having an absolute value of refracting power smaller than that of the negative lens element.

Abstract: The invention relates to a zoom lens with an easily bendable optical path, which comprises a reduced number of lens element while having high optical specification. The zoom lens comprises a moving lens group B (G2) that has positive refracting power and moves only toward an object side of the zoom lens upon zooming from a wide-angle end to a telephoto end of the zoom lens, a lens group A (G1) that is located on the object side with respect to the moving lens group B, has negative refracting power and remains fixed during the zooming, and a third lens group C (G3) that is located on an image side of the zoom lens with respect to the moving lens group B and moves in a locus different from that of the moving lens group B during the zooming. The lens group A that remains fixed during zooming comprises, in order from an object side thereof, a negative lens element, a reflective optical element and a positive lens element having an absolute value of refracting power smaller than that of the negative lens element.